IProviderSupport

type IProviderSupport = interface

  procedure PSEndTransaction();

End an active transaction

  procedure PSExecute;

Execute the current command-text.

  function PSExecuteStatement();

Execute a SQL statement.

  procedure PSGetAttributes();

Get a list of attributes (metadata)

  function PSGetCommandText;

Return the SQL command executed for getting data.

  function PSGetCommandType;

Return SQL command type

  function PSGetDefaultOrder;

Default order index definition

  function PSGetIndexDefs();

Return a list of index definitions

  function PSGetKeyFields;

Return a list of key fields in the dataset

  function PSGetParams;

Get the parameters in the commandtext

  function PSGetQuoteChar;

Quote character for quoted strings

  function PSGetTableName;

Name of database table which must be updated

  function PSGetUpdateException();

Transform exception to UpdateError

  function PSInTransaction;

Is the dataset in an active transaction.

  function PSIsSQLBased;

Is the dataset SQL based

  function PSIsSQLSupported;

Can the dataset support SQL statements

  procedure PSReset;

Position the dataset on the first record

  procedure PSSetCommandText();

Set the command-text of the dataset

  procedure PSSetParams();

Set the parameters for the command text

  procedure PSStartTransaction;

Start a new transaction

  function PSUpdateRecord();

Update a record

end;

IProviderSupport

Interface for Provider support

TDataset

Base class for records-based data-access